A form of "video commentary" was also later used on the official Doctor Who website, as a part of the Adventure Calendar series. These commentaries differed from those on the DVD boxset, in that they were simply recordings of the commentary participants; no footage from the actual episodes was included. Indeed, most of these "in-vision commentaries" were later repurposed as simple audio commentaries in the podcast series of commentaries used in the RTD era or on the DVD box sets. Nevertheless, they were labelled "in vision commentary" on their respective title cards.